Serena vs. Azarenka for Qatar Open final

Serena Williams of the U.S. returns the ball to Russia's Maria Sharapova in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal)

/ AP

Serena Williams of the U.S. returns the ball to Russia's Maria Sharapova in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal)

Serena Williams of the U.S. returns the ball to Russia's Maria Sharapova in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal) (/ AP)

MICHAEL CASEY, AP Sports Writer

Russia's Maria Sharapova reacts against Serena Williams of the U.S. in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal)

/ AP

Russia's Maria Sharapova reacts against Serena Williams of the U.S. in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal)

Russia's Maria Sharapova reacts against Serena Williams of the U.S. in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal) (/ AP)

Russia's Maria Sharapova returns the ball to Serena Williams of the U.S. in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal)

/ AP

Russia's Maria Sharapova returns the ball to Serena Williams of the U.S. in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal)

Russia's Maria Sharapova returns the ball to Serena Williams of the U.S. in the semifinal of the WTA Qatar Ladies Open tennis tournament in Doha, Qatar, Saturday, Feb. 16, 2013. (AP Photo/Osama Faisal) (/ AP)

A day after securing the No. 1 ranking, Serena Williams beat Maria Sharapova for a 10th straight time 6-3, 6-2 to reach the Qatar Open final on Saturday.

Williams faces Victoria Azarenka, whom she will replace at the top in Monday's new rankings. Azarenka beat Agnieszka Radwanska 6-3, 6-3 in the other semifinal, earning her 13th straight victory in 2013.

While Azarenka has been on a roll, she doesn't have a good record against Williams. The American was up 11-1 in their head-to-head meetings, including winning their last nine matches. However, both players dismissed the lopsided record, with Williiams insisting she won't have any psychological advantage.

"You have to go in with a new spirit and, you know, it's a new day," she said. "The slate is wiped clean to me."

Williams, who had been inconsistent for much of the week and struggled with her first serve, looked her old self at Sharapova's expense. The third-ranked Russian had no answer for Williams' first or even second serve, which resulted in six aces and 78 percent of first-service points won.

A double fault from Sharapova gave Williams the only break of the first set at 4-2. She consolidated the break with a love service game and closed out the set with two aces.

Sharapova came out stronger in the second and had a chance to go up 2-0. But Williams saved the break point and broke to go up 2-1. Williams broke again to make it 5-2. Serving for the match, she tightened up but saved a break point and prevailed when Sharapova hit a crosscourt forehand wide.

"Definitely the best I played. I had to play better," Williams said. "I'm playing a player that's very consistent, doesn't lose often, just usually in finals and semis. So I had to be on my game today."

Williams said securing the No. 1 spot, and becoming the oldest player at 31 to earn the honor, in her quarterfinal victory against Petra Kvitova helped relieve some stress.

"I definitely think it took pressure off," she said. "But, you know, you still have to stay in it."

Sharapova blamed her failure to return well for the loss.

"I mean, in the first few games it was close. I thought I had a few opportunities in her service games, love 15, love 30, 15-30, and I didn't use that to my advantage," Sharapova said.

"Against someone like Serena who is a great server in those situations, if you don't use them, don't put pressure on your opponent, you know, they gain a little bit of confidence and go for a little bit bigger first serves, getting a few more free points."

Azarenka maintained a similar dominance over Aganieszka whom she has beaten in 12 of their last 15 meetings. She hasn't lost to the fourth-ranked Pole in almost two years.

Both players struggled to hold serve in the early stages, but Azarenka took control after breaking for 3-2 in the first set. She ran off eight of nine games, taking a set and 3-0 lead.

Down 4-1, Radwanska became more aggressive, making several forays to the net that allowed her to close the gap to 4-2. For a moment, there was a sense the Pole could stage another comeback as she did in the quarterfinals against Caroline Wozniacki.

Radwanska did make it 30-all in the eighth game, but Azarenka proved too strong, combining great net play and a potent backhand to end the Pole's threat.

To win her second consecutive Qatar tournament, Azarenka admitted she will have to cut down on errors. She had 35 winners against Radwanska but also 28 unforced errors.

Win or lose on Sunday, Azarenka will swap places with Williams in the rankings, a prospect that didn't seem to bother the Belarusian. She spent 19 weeks at No. 1 in 2012 after winning her first Australian Open, gave up the top spot to Sharapova for four weeks and has been there since Wimbledon.

"It's so out of my hands," she said. "I have been playing really well, I have been really consistent, I haven't lost a match yet, so why should I be frustrated? For me, it's always important to just win matches, win big tournaments like here, as well. If I'm No. 2 after winning a tournament or whatever, that's what happens."